Carbureter.



B. H. SCHMIDT.

CARBURETER.

APPLICAHON FltED MAY 22. 1915.

1,1 a? 1 Q, Patented May 9, 1916.

2 SHEETS-SHEET I.

l rim 1 nl-ll lmuq A TTOR/VEYS B. H. SCHMIDT.

CARBURETER.

APPLICATION FILED MAY 22, 1915 Ll82,?l&. Patented 1\[z1y9,-1916.

2 SHEETS-SHEET 2 WITNESSES ,4 TTOR/V/SK creasing the fuel supply to provide means BRUNO H. SCHMIDT, 0F MINNEAPOLIS, MINNESOTA.

CARBURETER.

- Specification of Letters Patent.

Patented May 9, 11916.

Application filed May 22,1915. Serial No. 29,779.

To all whom it may concern;

Be it known that I, BRUNO H. SCHMIDT, a subject of the Emperor of Germany, and a resident of'Minneapolis, in the county of Hennepin and State of Minnesota, have invented a new and Improved Car'bnreter, 05

exact description.

Among the principal objects which the present invention has in view are: to prevent the con'gelation of the gasolene, and the sluggishness consequent thereon; to provide a regulator, automatic in character, for in for an engine in to the increased speed thereof; for thoroughly mixing the fuel, the mixture being perfected in proportion to the supply thereof; and to provide means for quickly and readily dismantling the carburetor for repair or cleaning.

Drawings.Figure 1 is avertical section on'an enlarged scale, of a carbureter conproportion structed and arranged in accordance with the present invention; Fig. 2 is a horizontal section ofthe same, taken as on the line 2-2,in Fig. 1; Fig. 3 is a horizontal section taken as on the line 3-3 in Fig. 1; Fig. 4

is a detail view of the throttle valveem-;

ployed in the present invention; Fig. 5 is a detail view showing a fragment of the electric heater employed 1n the present invention.

- Desofipzfz'0n.-As shown in the"drawi ngs,' the body of the carburetor has two sections,

an upper section 10 and a lower section, 11. The sections are provided, the one with an internally-threaded, and the other with an externally-threaded flange. Said threaded flanges, when united, are located midway .between the ends of the 'carbureter. Said flanges also coincide with a spherical mixing chamber 12. When the sections'10 and 11 are parted, the spindle 13, heaters 14, 15 and 16, and valve 17, may be lifted from the section 11 in which they are mainly stowed. A spider 18 in the section 10 serves only as a centering and steadying member for the spindle 13.

' spectively.

The sections 10 and 11 are both provided with straight outer cylindrical walls and interior cylindrical passages, said passages being formed by the walls 19 and 20, re-

The wall 19 forms What is herein termed the fuel delivery passage 21, while'the wall 20 forms what is herein termed the receiving chamber 22. Between tends a distributing tube 37.

f the-v chamber 'nipulate the valve 39, the same is provided with a lever 41.

thewalls 19 and 20 and the outer walls of said sections are formed closed chambers 23 and 24, respectively. Both chambers 23 and 24 are provided to heat the gasolene dellvered t0 the carbureter by way of the supply pipe 25, the coil sections 26 and 27 and the float chamber 28. The coil sections 26 and 27 arejconnected by pipes 29 and 30, which pipes are joined by a union 31. When the coil sections are thus connected, the gasolene is delivered to the chamber 28 without interruption when the free end of the float 32 is lowered to permit the needle valve 33 to open the ingress to said chamber. The float 32 is partly supported by a hinge 34. A portion of nected with a screw 35, the manipulation of which serves to adjust the float in the chamber'28 to accommodate aneedle valve 33.

Extending across the chamber 22, to form an entrance thereto, is a spider having a central body 36, from which upwardly ex- The tube 37 has a series of needle orifices 38, through which the oil or gasolene is injected into said chamber 22. The chamber 22 is normally supplied with air through the passages in said spider when the throttle valve 39- is adjusted to place screen-covered openings 40 in register with the openings in said spider. When the sol-id portions of said valve reg ister with said spider, the admission of air 22 is discontinued. To ma- To heat the gasolene or oil in its passage fromthe pipe 25 to the chamber 22, there are provided two distinct chambers. The chamber 23 is provided with ahot water inlet pipe 42 and an outlet pipe 43. The pipes 42 and 43 are suitably connected with the water-jacket of the engine with which the carbureter is employed when in service, and the water delivered to the chamber 23 by said pipe 42 serves to heat the gasolene or oil. as the same passesthrough the coil section 26. The heat retained by the gasolene when passing through this chamber has been found sufiicient to endure until said gasolene-or oil has been delivered to the chamber 28 and therefrom to the chamber 22.

The chamber 24 in the section'll, and the coil section 27 mounted therein, are called into service when the hot wateris not ava11-' able, or when the hot water is not suflicient to heat said gasolene. To heat the coil section 27, thechamber 24 is provided with a series of electrical heaters. The heaters re ferred to comprise supporting rings 44, 45, 46 and '47. The rings '44 and 45 are of relatively large diameter, and are supported upon the outer wall of the section 11 adjacent the upper and lower ends of the chamber 24. Said rings are perforated at suitable intervals to receive a suitable resistance wire 48, which is interwoven between the two rings, much inthe manner as shown in Fig. 5 of the drawings. The wire'48is continuous with a wire 4Q,'which is threaded between the rings. 46 and '47, shown best inis irf'suflicientfor the purpose designed, thentheelectric heater is employed until the water suppliedto the. chamber 23 is sulficient for the purpose designed.

As above stated, the oildelivered to the tube '37 is distributed therefrom by way of the orifices 38. The orifices 3.8 are disposed longitudinally .in .the'tube 37, and are normally closed by the tapered valve 17. The valve 17 is normally seated on a surface formed on the ledge-52 at the upper edge of the chamber 22. In the normal operation.

of the engine, the lowermost orifice. 38 is exposed by the valve 17, which orifice supplies, suflicient gasolene to mix with the air in the chamber 22 to formtherewith'a fuel which passes through apertures 53 in the valve 17, to supply a limited amount of fuel to the mixing chamber 12. Among other.

advantages which this carbureter has in view is to increase the supply'of fuel in colrespondence with the consumption of fuel and with the speed of the engine supplied therewith; 7 v

As the engme increases its speed, the -'force increased. The draft of air passingupward through the chamber 12 operates upon the inclined blades of the beater 16, to rotate the same and the hub block 54 with which they are connected. I

The block 54 rests on ball bearings 55, and is provided with hinge extensions 56, to which extensions the arms 57 having weighted balls 58 at the ends thereof, are

" connected; The arms of the centrifuge thus constructed are connected by rods 59, with a collar 60. The collar 60-is mounted upon ball bearings 17 and the cap 61 thereof.

It is obvious that as the passage of air through the chamber 12 increases in speedtube 37 to'the chamber 22. The increased volume of air permitted to pass from the chamber 22 is thus assisted by the increased volume of gasolene admitted thereto for ad'- mixturewith said air. As the speed of the beaters 16 increases coincident with the increased speed of the engine, the valve 17 is lifted to free the delivery of fuel from the chamber 22, and to admit an added quantity ofv gasolene to said member.

The. gasolene and air thus admitted to the chamber 22, and thence to the chamber 12, is thoroughly mixed in passing through said chamber 12, by the operation of the beaters 14, 15 and 16. The beaters are propelled by the current of the 'fuel passing through said chamber 12, and operate to deflect the same from the straight line. It will be noticed that thebladesof the beaters 14 and 16 are pitched in one direction, while .the blades of the beater 15 are pitched inv the reverse direction. As a concomitant to this construction, the current deflected by the beater 16 to one side, is in turn deflected in an opposite direction by the beater 15, to be between the body of the valve again deflected by the blades of the beater 14.

The beaters 14 and 1.5 are provided with hubs 62 and 63, respectively. The column of beaters 14, 15 and 16 is maintained positioned between a base 64and a cap 65, said base and cap being flexibly mounted on the stationary spindle 13.

When the fuel, having passed from the chamber 22, reaches-the passage 21, it is' thoroughly and completely mixed to form an explosive gas having an even and constant quality.

Claims:

1. 'A carbureter comprising an elongated mixing chamber having double walls spaced apart to form annular unconnected cham- 'bers, said chambers forming end compartof suction of the intake is correspondingly ments; a water supply for one of said compartments, said supply being connected with the circulating system of an engine; an electric heater disposed in the other compartment, said heater being connected'with any suitable electric source; means for supply- 'ing fuel to said mixing chamber, said means I Water supply tinuous passage for the fuel passing through both of said compartments to said 1n1X1ng chamber.

nected therewith, said coils being one contained Within the first-mentioned compart-' ment and the other within the second-mentioned compartment, sa d @0115 being operatively engaged to form a continuous passage for the fuel passing through both ofsaid compartments to said mixing chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

BRUNO H. SCHMIDT.

lVitnesses E. F. MURDOCK, Gzeenen H. EMSLI 

